Malicious RTF — malware analysis report

Static analysis result for SHA-256 b973b8a4a251297a…

MALICIOUS

RTF

4.1 KB First seen: 2020-07-24
MD5: 5c1f7f029f0ff1d1efca036723f52426 SHA-1: ddeacfd91b27d84ec54883ede726352befdf59fc SHA-256: b973b8a4a251297a0aa6f799dba9bec8ad78377aeed9c336d911299b19ff5d05
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an OLE object with ".objupdate" directive, indicating an attempt to exploit a vulnerability for code execution. The embedded OLE object is likely a payload designed to be activated automatically upon opening the document.

Heuristics 2

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000091.bin rtf-objdata-decoded RTF \objdata at offset 0x91 1790 bytes
SHA-256: c02c5438f2190eec71b705d1904892f6e1c79a5a28bcad5c931cfc034ebfbc53

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